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TPS2596: spreadsheet calculator does not include TPS259631

Part Number: TPS2596

The excel calculator available for TPS2596xx devices has a typo in the drop down box, listing tps259531 instead of TPS259631. Despite the typo, the spreadsheet does not adjust for over voltage lockout above 13.58V. It is not clear where to enter the value of R3 for calculating the other two resistors. 

More importantly, the datasheet does not seem to offer all details necessary for calculating dVdt cap and we depend on the spreadsheet for calculation. Not being able to enter voltages above 13.58V creates a limitation for my customer's application.

Can you please comment and advise when a revision of the calculator might be available? Also, is it possible to update the datasheet with the additional equations for calculating CdVdt?

Thank you!

  • Hi Lenio,

    Thanks for pointing this out. I am attaching the updated design calculator here.

    TPS2596xx_Design_Calculator.xlsm

    In Datsheet you can refer to  section '9.2.3.3 Setting Output Voltage Ramp Time (TdVdT)' to understand the selection of Cdvdt.

  • Hi Lenio,

    Thanks for pointing out the typing error. We will update the calculator . For a fast work around I will suggest to chose TPS259630 from drop down because difference between TPS259630 and TPS259631 is just of latch-off and auto-retry variant and will not affect design process.

    Regarding CDVDT calculations please refer section 9.2.3.3 Setting Output Voltage Ramp Time (TdVdT) of datasheet .

    Let me know any further query.

    Regards

    Kunal Goel